205
19.5.16 Abnormal External Thermistor 1 (H67)
Malfunction Caused:
1 Faulty connector connection.
2 Faulty room temperature zone 1 sensor.
3 Faulty indoor sub PCB.
Abnormality Judgment:
Continue for 5 seconds.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
YES
● Correct connection
NO
● Change external thermistor 1
NO
YES
Disconnect sensor from sub PCB measure resistance of sensor
and compare against sensor characteristic same?
Abnormal external thermistor 1
Check CN205 connector on sub PCB normal?
Change sub PCB
Caution
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